# 星历 vs 知几Kairos

The clearest difference is update cadence: 知几Kairos at fortnightly against 星历's monthly. 星历's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

星历 ships an update monthly, 知几Kairos fortnightly. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 星历 | 知几Kairos |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 47 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Beijing Nashi Huakai Technology Co., Ltd.](https://appshunter.io/developer/946737411) | [algormula Pte. Ltd.](https://appshunter.io/developer/1828508832) |

## What reviewers say

### 星历

[App page](https://appshunter.io/ios/app/id6738400506)

Explore diverse calendars, including traditional Chinese, Islamic, Tibetan, and Mayan, alongside astronomical events like moon phases and planetary movements. Customize your view and enjoy a pure, ad-free experience dedicated to cultural heritage and cosmic observation.

**Highlights:** Multicultural calendar support, Traditional Chinese almanac, Astronomical and celestial events, Moon phase tracking, Customizable homepage layout, Ad-free experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 知几Kairos

[App page](https://appshunter.io/ios/app/kairos/id6758753321)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 星历 free?

星历 is free to download, with no in-app purchases.

### Is 知几Kairos free?

知几Kairos is free to download, with no in-app purchases.

### Do 星历 or 知几Kairos have ads?

Neither 星历 nor 知几Kairos shows ads.

### Which is updated more often, 星历 or 知几Kairos?

星历 ships an update monthly, and 知几Kairos fortnightly. Most recently, 星历 was updated on October 30, 2026 and 知几Kairos on November 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*